TY  - RPRT
TI  - Determination of nanogram levels of silver in suspended materials of streams retained by a membrane filter with the "sampling-boat" technique
AU  - T. T. Chao
AU  - J.W. Ball
PY  - 1971
DO  - 10.1016/s0003-2670(01)81871-7
UR  - https://pubs.usgs.gov/publication/70009777
ID  - 70009777
ER  -